Gray rocks & minerals
Gray rocks and minerals are extremely common in the field. Hardness, density, and how the specimen breaks (fracture vs. cleavage) tell you more than color alone.
Showing 241–360 of 862 gray rocks (page 3 of 8).
Elrathiacommonfossilbrown, gray, black
Empressiteraremineral · Mohs 3.5white, pale brass yellow, gray- No imageEndelliteuncommonmineral · Mohs 2-2.5white, yellowish, gray
Enstatitecommonmineral · Mohs 5-6green, brown, gray
Epididymiteraremineral · Mohs 5.5white, colorless, gray
Epistoliteraremineral · Mohs 3.5white, gray, pink
Ertixiiteraremineral · Mohs 5.5-6colorless, white, gray
Eucryptiteraremineral · Mohs 6.5white, colorless, gray
Eudidymiteraremineral · Mohs 5.5-6white, colorless, gray
Eulytineraremineral · Mohs 4.5yellow, brown, gray
Eurypteriduncommonfossilbrown, black, tan
Eye Agatecommonmineral · Mohs 6.5-7white, gray, brown
Fairchilditeraremineral · Mohs 3colorless, white, gray- No imageFairfield Agatecommonmineral · Mohs 6.5-7brown, tan, white
Favositescommonfossil · Mohs 3-4gray, tan, brown
Feldsparcommonmineral · Mohs 6white, gray, pink
Ferchromideraremineral · Mohs 5-6silver-white, gray- No imageFerdowsiiteraremineral · Mohs 2gray, white
Fern Fossilcommonfossilblack, brown, gray
Ferrihollanditeraremineral · Mohs 6black, gray
Ferro-gedriteraremineral · Mohs 5-6dark brown, brownish black, gray
Ferroindialiteraremineral · Mohs 7-7.5blue, colorless, gray
Ferroseliteraremineral · Mohs 2.5-3white, gray
Ferrosiliteraremineral · Mohs 5-6brown, dark brown, black- No imageFerroskutteruditeraremineral · Mohs 5.5-6tin-white, silver-white, gray
- No imageFerrostalderiteraremineral · Mohs 3.5-4black, gray
- No imageFibrolitecommonmineral · Mohs 6.5-7.5white, colorless, gray
Finger Coralcommonfossil · Mohs 3-4white, tan, brown
Finnemaniteraremineral · Mohs 2.5-3gray, white, colorless
Fish Fossilcommonfossil · Mohs 3-5brown, tan, gray
Fishtail Selenitecommonmineral · Mohs 2colorless, white, yellowish
Fletcheriteraremineral · Mohs 4.5black, gray
Flintcommonmineral · Mohs 7gray, black, brown- No imageFlint Nodulescommonmineral · Mohs 7gray, black, brown
- No imageFlorenskyiteraremineral · Mohs 5-6white, gray
- No imageFluorbritholite-(Ce)raremineral · Mohs 5-5.5brown, reddish-brown, yellow
- No imageFluorcalciobritholiteraremineral · Mohs 5brown, yellow, gray
- No imageFluorcanasiteraremineral · Mohs 5-6colorless, white, pinkish
Fluoro-edeniteraremineral · Mohs 5-6white, gray, pale green
Fluoro-tremoliteuncommonmineral · Mohs 5-6white, colorless, pale green- No imageFluorocroniteraremineral · Mohs 5colorless, white, gray
Forsteritecommonmineral · Mohs 6.5-7green, yellow-green, colorless- No imageFort Payne Chertcommonmineral · Mohs 6.5-7white, gray, brown
Foshagiteraremineral · Mohs 3white, colorless, gray
Fossil Coralcommonfossil · Mohs 6.5-7white, tan, brown
Fossil Leafcommonfossil · Mohs 2-4brown, black, gray
Fossil Leaf Printscommonfossil · Mohs 2-4brown, tan, black
Fossil Plantscommonfossilbrown, black, gray- No imageFossilized Coralcommonfossil · Mohs 6.5-7white, gray, brown
- No imageFossilized Fernscommonfossil · Mohs 3-6black, brown, gray
- No imageFossilized Horse Bonescommonfossil · Mohs 3-6brown, tan, white
- No imageFossilized Quarrycommonfossilbrown, tan, gray
Fossilized Shark Teethcommonfossil · Mohs 3-5black, gray, brown
Fossilized Shellscommonfossil · Mohs 3-5white, gray, brown
Fossilscommonfossil · Mohs 3-7brown, gray, white
Francolitecommonmineral · Mohs 5white, gray, yellow
Frohbergiteraremineral · Mohs 3.5white, pale rose, gray
Fulguriteuncommonmineral · Mohs 6.5-7white, gray, tan
Galliteraremineral · Mohs 3-3.5gray, dark gray, blackish-gray- No imageGanteriteraremineral · Mohs 2.5white, colorless, gray
- No imageGarmiteraremineral · Mohs 3.5white, colorless, gray
Garnet Schistcommonmetamorphic · Mohs 3-7gray, brown, silver
Gastrolithsuncommonfossil · Mohs variablevariable, brown, gray
Gastropod Fossilcommonfossilbrown, gray, white
Gastropodscommonfossil · Mohs 3-5white, brown, gray- No imageGatewayitecommonmineral · Mohs 7white, gray, brown
Gaylussiteuncommonmineral · Mohs 2.5-3colorless, white, gray
Gedriteuncommonmineral · Mohs 5-6brown, gray, green
Geeriteraremineral · Mohs 1.5-2black, gray
Geffroyiteraremineral · Mohs 3-4white, gray
Gehleniteuncommonmineral · Mohs 5.5-6gray, yellowish-brown, white
Geodecommonsedimentary · Mohs 7white, gray, brown
Giraudite-(Zn)raremineral · Mohs 3-4gray, black
Gismondine-Cauncommonmineral · Mohs 4-5white, colorless, gray
Glauberitecommonmineral · Mohs 2.5-3colorless, white, yellow
Glaucodotraremineral · Mohs 5tin-white, silver-white, gray
Gneisscommonmetamorphic · Mohs 5-7white, gray, pink- No imageGold Quartzcommonmineral · Mohs 7white, gray, yellow
Goniatitecommonfossil · Mohs 3-4brown, gray, black
Gorceixiteuncommonmineral · Mohs 4.5-5.5white, colorless, yellow
Granitecommonigneous · Mohs 6-7white, gray, pink
Granitic Pegmatitecommonigneous · Mohs 6-7white, pink, gray
Granodioritecommonigneous · Mohs 6-7gray, white, black
Grape Agatecommonmineral · Mohs 6.5-7purple, violet, lavender
Graphic Granitecommonigneous · Mohs 6-7white, gray, pink- No imageGraţianiteraremineral · Mohs 3-3.5gray, black
- No imageGray Agatecommonmineral · Mohs 6.5-7gray, gray, white
- No imageGray Agatecommonmineral · Mohs 6.5-7gray, gray, white
- No imageGray Baritecommonmineral · Mohs 3-3.5gray, white, colorless
Grayiteraremineral · Mohs 4white, yellowish, gray
Gregoryiteraremineral · Mohs 5white, gray, pale yellow
Greigiteuncommonmineral · Mohs 4-4.5black, gray
Greywackecommonsedimentary · Mohs 6-7gray, dark gray, brownish gray
Grumipluciteraremineral · Mohs 1.5-2gray, white
Gruneritecommonmineral · Mohs 5-6brown, greenish-brown, gray- No imageGruzdeviteraremineral · Mohs 3-3.5gray, white
- No imageGypsitecommonsedimentary · Mohs 1.5-2white, gray, yellowish
Gypsumcommonmineral · Mohs 2colorless, white, gray
Hakite-(Cd)raremineral · Mohs 3-4gray, black- No imageHakite-(Hg)raremineral · Mohs 3-4gray, black
Hakite-(Zn)raremineral · Mohs 3-4gray, black- No imageHalamishitecommonmineral · Mohs 7white, gray, brown
Halloysitecommonmineral · Mohs 2-2.5white, off-white, gray
Hambergiteraremineral · Mohs 7.5colorless, white, gray
Hanksiteraremineral · Mohs 3-3.5colorless, white, yellow- No imageHansblockiteraremineral · Mohs 3.5white, gray
Hardystoniteraremineral · Mohs 3white, gray, pink
Harkeriteraremineral · Mohs 5white, colorless, gray
Harmotomeuncommonmineral · Mohs 4.5white, gray, yellowish
Hatchiteraremineral · Mohs 3.5black, gray
Hatruriteraremineral · Mohs 3colorless, white, gray
Hectoriteuncommonmineral · Mohs 1-2white, gray, pink
Hedyphaneraremineral · Mohs 4-5white, yellowish, colorless- No imageHeulandite-Srraremineral · Mohs 3-4white, colorless, gray
- No imageHexacelsianraremineral · Mohs 6white, colorless, gray
Hidalgoiteraremineral · Mohs 4-4.5white, colorless, yellow
Hillebranditeraremineral · Mohs 6white, colorless, gray- No imageHloušekiteraremineral · Mohs 5.5white, gray, pale yellow
Horn Coralcommonfossil · Mohs 3-4gray, tan, brown
Hornfelscommonmetamorphic · Mohs 5-7gray, dark gray, black
Identify your find on the go
Open RockHoundR to look up rock properties offline and find more like this near you.
